EP 3134273 B1 20190306 - SECURITY DEVICE FOR SECURITY DOCUMENT
Title (en)
SECURITY DEVICE FOR SECURITY DOCUMENT
Title (de)
SICHERHEIT VORRICHTUNG FÜR SICHERHEITSDOKUMENT
Title (fr)
DISPOSITIF DE SÉCURITÉ POUR DOCUMENT DE SÉCURITÉ
Publication
Application
Priority
CH 2014000053 W 20140424
Abstract (en)
[origin: WO2015161388A1] A security device (1) for verifying an authenticity of a security document (100) comprises an at least partially transparent multilayer substrate (2) with a first surface (3) and a second surface (4). A first pattern (10) is arranged on the first surface (3). This first pattern (10) is derivable using a first seed pattern (10'). A second pattern (20) is arranged on the second surface (4). This second pattern (20) is derivable using a second seed pattern (20'). The security device (1) furthermore comprises a third pattern (30) arranged between a first and a second substrate layer (2a, 2b). The third pattern (30) is derivable using an inversion of the first pattern (10), an inversion of the second pattern (20), and a non-inverted third seed pattern (30'). Transmittances and reflectivities of the patterns (10, 20, 30) are selected such that in a reflection viewing mode, only the first or second seed pattern (10', 20') is visible, respectively. In a transmission viewing mode, only the third seed pattern (30') is visible
IPC 8 full level
B42D 25/30 (2014.01); B42D 25/342 (2014.01); B42D 25/351 (2014.01); B42D 25/45 (2014.01); B44F 1/08 (2006.01); G07D 7/06 (2006.01); G07D 7/12 (2016.01)
CPC (source: EP US)
B42D 25/21 (2014.10 - US); B42D 25/30 (2014.10 - US); B42D 25/342 (2014.10 - EP US); B42D 25/351 (2014.10 - EP US); B42D 25/435 (2014.10 - EP US); B42D 25/45 (2014.10 - EP US); G07D 7/003 (2017.04 - EP US); G07D 7/06 (2013.01 - EP US); G07D 7/12 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2015161388 A1 20151029; EP 3134273 A1 20170301; EP 3134273 B1 20190306; US 2017046901 A1 20170216; US 9870669 B2 20180116
DOCDB simple family (application)
CH 2014000053 W 20140424; EP 14722078 A 20140424; US 201415305991 A 20140424